To better explain my question, the process as such follows step by step (assuming the caster is able to cast and use all proposed abilities):
- Wizard works main to create a corpse on the ground.
- Spellcaster uses Illusory Reality as a bonus action to make the corpse real.
- Wizard works Animate dead on the corpse.
Here is the suggested question. Illusory reality lasts only a minute. Does the creature remain undead, or does it become an illusion after a minute has passed and I have not left it as it was?
Please quote sources and keep your answer / interpretation RAW.